231032501 has 12 divisors (see below), whose sum is σ = 269376300. Its totient is φ = 197568000.

The previous prime is 231032497. The next prime is 231032513. The reversal of 231032501 is 105230132.

It can be written as a sum of positive squares in 2 ways, for example, as 104019601 + 127012900 = 10199^2 + 11270^2 .

It is not a de Polignac number, because 231032501 - 2² = 231032497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231032501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231032521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16751 + ... + 27251.

It is an arithmetic number, because the mean of its divisors is an integer number (22448025).

Almost surely, 2^231032501 is an apocalyptic number.

It is an amenable number.

231032501 is a deficient number, since it is larger than the sum of its proper divisors (38343799).

231032501 is a wasteful number, since it uses less digits than its factorization.

231032501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10964 (or 10957 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 231032501 is about 15199.7533203667. The cubic root of 231032501 is about 613.6080188635.

Adding to 231032501 its reverse (105230132), we get a palindrome (336262633).

The spelling of 231032501 in words is "two hundred thirty-one million, thirty-two thousand, five hundred one".